Semi-rough idling problem - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

nikos30 · 12-02-2012, 01:22 PM

Hey guys and happy Sunday,

Ever since I got the new cat (replaced by dealer), I have noticed that the car kinda rumbles when in park or is idling. It kinda feels like the mild ghost cam from trifecta. I am sure I do not have it on.

I still haven't gotten an updated tune after adding all of the mace products. I am working on it though. I sent in a log on monday and am still waiting for a response..

Can an outdated tune be causing this problem? Or could this be more serious than I think and maybe I should take it in?

BTW, I realized I never successfully installed the stock tune before I sent the car back to the dealership. They never noticed the tune. So for you guys wondering if it voids the warranty, it doesn't with the LLT.

Thanks for your input guys,
Niko

Lil' Nasty · 12-02-2012, 01:42 PM

Both o2 sensors connected?

nikos30 · 12-02-2012, 02:37 PM

yupp

nikos30 · 12-02-2012, 07:18 PM

110 views and one question? you guys got nothing? :(

Yellow_Glide · 12-02-2012, 07:58 PM

Check the o2 and see if the installer got them dirty. Local auto parts store will have o2 cleaner if they are.

nikos30 · 12-02-2012, 09:31 PM

Ok, I also heard my spark plugs could be bad. is that a possibility?

Yellow_Glide · 12-02-2012, 09:40 PM

Wouldn't think so- how long since the work? Possible plugs may be an issue more likely it's sensor related.

nikos30 · 12-02-2012, 09:55 PM

like 200 miles ago. and ok, thats what I was told by a friend who is pretty experienced.

Yellow_Glide · 12-02-2012, 09:59 PM

Pull one and check.

Ventmaster · 12-03-2012, 07:00 AM

If you decide to replace'em, check the Denso ITV20 5339's. Threw a set in my car cause I got it in my head I needed to...

.

But it does seem to be running quite strong!

Before you do though- I'd disconnect the battery and reset the ECM. Several members have related a smoother idle and generally improved running after resetting the trims and allowing a "re-learn".

Can't_C_Me · 12-03-2012, 09:31 AM

Check the plugs, if they are real black clean them off with a wire brush and then spray them with brake cleaner. These engines run rich, so before spending on plugs try it! Also spray off your MAF as you could of got some contaminants on it. Either of these 2 can cause rough idle.

Sent from my Samsung Galaxy S III

12-02-2012, 01:22 PM	#1
nikos30 HT5 EastSide Drives: 2010 Camaro 2LT Join Date: Aug 2010 Location: NJ/PA Posts: 1,596 View My Garage	Semi-rough idling problem Hey guys and happy Sunday, Ever since I got the new cat (replaced by dealer), I have noticed that the car kinda rumbles when in park or is idling. It kinda feels like the mild ghost cam from trifecta. I am sure I do not have it on. I still haven't gotten an updated tune after adding all of the mace products. I am working on it though. I sent in a log on monday and am still waiting for a response.. Can an outdated tune be causing this problem? Or could this be more serious than I think and maybe I should take it in? BTW, I realized I never successfully installed the stock tune before I sent the car back to the dealership. They never noticed the tune. So for you guys wondering if it voids the warranty, it doesn't with the LLT. Thanks for your input guys, Niko __________________

12-02-2012, 01:42 PM	#2
Lil' Nasty [COTW 4/13/15] Drives: Supercharged LLT Join Date: Jul 2010 Location: Florida Posts: 5,957	Both o2 sensors connected? __________________ LiL' Nasty's Build Journal

12-02-2012, 02:37 PM	#3
nikos30 HT5 EastSide Drives: 2010 Camaro 2LT Join Date: Aug 2010 Location: NJ/PA Posts: 1,596 View My Garage	yupp __________________

12-02-2012, 07:18 PM	#4
nikos30 HT5 EastSide Drives: 2010 Camaro 2LT Join Date: Aug 2010 Location: NJ/PA Posts: 1,596 View My Garage	110 views and one question? you guys got nothing? :( __________________

12-02-2012, 07:58 PM	#5
Yellow_Glide Drives: 2011 1LT "Chakita". 04 Yota Join Date: Jun 2011 Location: Round Rock, TX Posts: 823	Check the o2 and see if the installer got them dirty. Local auto parts store will have o2 cleaner if they are. __________________ Hi, my name is Chakita. I have cams!!!! Build thread: http://www.camaro5.com/forums/showthread.php?p=3847083

12-02-2012, 09:31 PM	#6
nikos30 HT5 EastSide Drives: 2010 Camaro 2LT Join Date: Aug 2010 Location: NJ/PA Posts: 1,596 View My Garage	Ok, I also heard my spark plugs could be bad. is that a possibility? __________________

12-02-2012, 09:40 PM	#7
Yellow_Glide Drives: 2011 1LT "Chakita". 04 Yota Join Date: Jun 2011 Location: Round Rock, TX Posts: 823	Wouldn't think so- how long since the work? Possible plugs may be an issue more likely it's sensor related. __________________ Hi, my name is Chakita. I have cams!!!! Build thread: http://www.camaro5.com/forums/showthread.php?p=3847083

12-02-2012, 09:55 PM	#8
nikos30 HT5 EastSide Drives: 2010 Camaro 2LT Join Date: Aug 2010 Location: NJ/PA Posts: 1,596 View My Garage	like 200 miles ago. and ok, thats what I was told by a friend who is pretty experienced. __________________

12-02-2012, 09:59 PM	#9
Yellow_Glide Drives: 2011 1LT "Chakita". 04 Yota Join Date: Jun 2011 Location: Round Rock, TX Posts: 823	Pull one and check. __________________ Hi, my name is Chakita. I have cams!!!! Build thread: http://www.camaro5.com/forums/showthread.php?p=3847083

12-03-2012, 07:00 AM	#10
Ventmaster Drives: 2017 1SS 6spd Join Date: Jan 2011 Location: Utah Posts: 2,857	If you decide to replace'em, check the Denso ITV20 5339's. Threw a set in my car cause I got it in my head I needed to... . But it does seem to be running quite strong! Before you do though- I'd disconnect the battery and reset the ECM. Several members have related a smoother idle and generally improved running after resetting the trims and allowing a "re-learn".

12-03-2012, 09:31 AM	#11
Can't_C_Me Don't Sleep on My V6 Drives: 2016 C7 1LT Join Date: Dec 2010 Location: Oxford, GA Posts: 3,596 View My Garage	Check the plugs, if they are real black clean them off with a wire brush and then spray them with brake cleaner. These engines run rich, so before spending on plugs try it! Also spray off your MAF as you could of got some contaminants on it. Either of these 2 can cause rough idle. Sent from my Samsung Galaxy S III __________________